Cyclopentanone

Modify Date: 2025-08-21 13:23:18

Cyclopentanone Structure
Cyclopentanone structure
 Common Name Cyclopentanone
CAS Number 120-92-3 Molecular Weight 84.116
Density 1.0±0.1 g/cm3 Boiling Point 130.5±8.0 °C at 760 mmHg
Molecular Formula C5H8O Melting Point -51 °C
MSDS Chinese USA Flash Point 30.6±0.0 °C
Symbol GHS02 GHS07
GHS02, GHS07		 Signal Word Warning

 Names

Name cyclopentanone
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.0±0.1 g/cm3
Boiling Point 130.5±8.0 °C at 760 mmHg
Melting Point -51 °C
Molecular Formula C5H8O
Molecular Weight 84.116
Flash Point 30.6±0.0 °C
Exact Mass 84.057518
PSA 17.07000
LogP 0.20
Vapour Pressure 9.7±0.2 mmHg at 25°C
Index of Refraction 1.457
Stability Stable. Incompatible with strong reducing agents, strong oxidizing agents, strong bases.
Water Solubility PRACTICALLY INSOLUBLE

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
GY4725000
CHEMICAL NAME :
Cyclopentanone
CAS REGISTRY NUMBER :
120-92-3
LAST UPDATED :
199710
DATA ITEMS CITED :
11
MOLECULAR FORMULA :
C5-H8-O
MOLECULAR WEIGHT :
84.13
WISWESSER LINE NOTATION :
L5VTJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,271,1979
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 20,563,1982
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 20,573,1982
TYPE OF TEST :
Rinsed with water
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 20,573,1982 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1950 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Behavioral - muscle weakness Behavioral - coma
REFERENCE :
COREAF Comptes Rendus Hebdomadaires des Seances, Academie des Sciences. (Paris, France) V.1-261, 1835-1965. For publisher information, see CRASEV. Volume(issue)/page/year: 254,2245,1962
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2600 mg/kg
TOXIC EFFECTS :
Autonomic Nervous System - other (direct) parasympathomimetic Behavioral - coma Lungs, Thorax, or Respiration - other changes
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 50,199,1903
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
3 gm/kg
TOXIC EFFECTS :
Autonomic Nervous System - other (direct) parasympathomimetic Behavioral - changes in motor activity (specific assay) Skin and Appendages - sweating
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 50,199,1903
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
2 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 32(10),25,1988

 Safety Information

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Warning
Hazard Statements H226-H315-H319
Precautionary Statements P305 + P351 + P338
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes Xi:Irritant
Risk Phrases R10;R36/38
Safety Phrases S23
RIDADR UN 2245 3/PG 3
WGK Germany 1
RTECS GY4725000
Packaging Group III
Hazard Class 3
HS Code 2914299000

 Synthetic Route

 Customs

HS Code 2914299000
Summary 2914299000. other cyclanic, cyclenic or cyclotherpenic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

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 Synonyms

Adipic keyone
MFCD00001409
Cyclopentsnon
Ketocyclopentane
cyclopentan-1-one
Adipinketon
EINECS 204-435-9
Cyclopentanone [UN2245] [Flammable liquid]
Ketopentamethylene
Adipic Ketone
Cyclopentanon
cyclo-pentanone
Dumasin
Adipin ketone
cyclopentan-5-one
Cyclopcntanon
Cyclopentanone
FEMA 3910
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